Path: utzoo!attcan!uunet!cs.utexas.edu!samsung!zaphod.mps.ohio-state.edu!pacific.mps.ohio-state.edu!ohstpy!miavx1!pemurray From: pemurray@miavx1.acs.muohio.edu (Peter Murray) Newsgroups: comp.sys.next Subject: Re: user accounts Message-ID: <1818.26a44ba6@miavx1.acs.muohio.edu> Date: 18 Jul 90 16:44:36 GMT References: <1990Jul16.010458.24591@eng.umd.edu> Lines: 41 In article <1990Jul16.010458.24591@eng.umd.edu>, cyliao@eng.umd.edu (Chun-Yao Liao) writes: > Hi, sorry to bother with these dumb questions... I am a not-so-experienced > Unix user and now I am in charge of system administration of my very new > CuBE (Yes! just got mine last Friday!) so here are the questions: > > 1. How do I set a disk quota limit to the users? The code to check for disk quotas was not compiled into the NeXT's kernel. (As a matter of fact, they include no way of compiling the kernel, a real problem if you ask me.) Maybe it'll show up in 2.0. > 2. How can I keep users from modifying preferences? Take the Set-User-ID bit (SUID) off of Preferences. The comand to change it is: `chmod 555 Preferences` (assuming you are root and you are in the directory where Preferences is located). The when a program with a SUID bit is executed, the user becomes the owner of the program (temporarily) and inherits all of the priviledges of that user. Preferences is normally owned by ROOT, so when it is run with a SUID bit, the user can do things like modify the time and the default boot device and things like that. Taking the SUID bit off takes away that power. > 4. Can anyone recommand me any book concerning system administration for > Unix? Also a book for object-C? There are a couple of good books out there to help you with administering UNIX. Unfortunately, I don't have them here. I'll try to remember to post them later... > I am sure I will come out with more dumb questions to bother netland. Keep asking the questions. These were good ones. Peter -- Peter Murray Neat UNIX Stunts #4: pemurray@miavx1.bitnet 215 Foxfire Dr #308 csh> \(- murrayp@apsvax.aps.muohio.edu Oxford, OH 45056 NeXT Mail: pmurray@next4.acs.muohio.edu 513/523-5994 Have you hugged your NeXT today?